Package org.soulwing.prospecto.api

Class UndefinedValue

java.lang.Object

org.soulwing.prospecto.api.UndefinedValue

public class UndefinedValue
extends Object

A value that is used to represent a missing or disallowed value during model update.

Since null is used a view to mean that a property value should be removed during view application, we need another value to represent situations in which a model property should not be updated. For example, if an interceptor does not wish to allow a particular subtree of the model to be visited during update, or for a calculated property value that cannot be produced during update.

Author:

Carl Harris

Field Summary

Fields

Modifier and Type	Field	Description
static UndefinedValue	INSTANCE

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

INSTANCE

public static final UndefinedValue INSTANCE